CVE-2026-90275
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Received - Intake
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Vulnerability report for CVE-2026-90275, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-17
Last updated on: 2026-09-17
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
md/raid1: don't set array_frozen in raid1_takeover()
raid1_takeover() sets conf->array_frozen = 1 on the newly-allocated
r1conf and nothing ever clears it, so every I/O to the array stalls
permanently once _wait_barrier() sees it stuck at 1.
This used to be harmless: level_store() called mddev_resume() right
after pers->run(), which called raid1_quiesce(mddev, 0) and cleared
array_frozen back to 0 regardless of what raid1_takeover() set. Commit
b39f35ebe86d ("md: don't quiesce in mddev_suspend()") removed that
quiesce(mddev, 0) call, so the pre-set now sticks.
setup_conf() already zero-initializes the new r1conf via kzalloc, so
just don't set array_frozen here.
Same class of bug as commit 892da88d1cd9 ("md/raid10: fix a
'conf->barrier' leakage in raid10_takeover()"), also triggered by
b39f35ebe86d.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
Currently, no data is known.
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
